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Today, workflow based software model has become mainstream to many application system developments. However, in most of these applications, their workflow procedures are fixed in their source code, this is not only restricts to the enterprises changing their working procedures to adapting the market requirements, but also limits the dynamic changes, scalability and adaptation of the system itself. Here, by research on the workflow technologies, direct acyclic graph (DAG) technologies, component technologies and XML technologies, it introduces a component and direct acyclic graph based dynamic workflow design, to improve the workflow based system dynamic changes and scalability.

Today, how do online shopping system providers capturing customers interesting information and web surfer habits is a critical factor to affect their business running. Another problem is that their online systems scalability is not good enough and cannot be easily customized to user personnel requirements. Here, by research on software bus, XML, workflow and component technologies, it introduces a software bus and component based online shopping system design, to improve the online shopping system intelligence and scalabilities and at the end to improve their business.